Question

What is 7x-21=11x-73

Answer 1

7x-21=11x-73

-21=4x-73

52=4x

X=13

Answer 2

`7x - 21 = 11x - 73 \\ \dashrightarrow \: 11x - 7x = 73 - 21 \\ \dashrightarrow \: 4x = 52 \\ \ \: \: \: \: dividing \: both \: sides \: by \: 4 \\ \dashrightarrow \: \cancel (4x)/(4) = \cancel (52)/(4) \\ \\ \dashrightarrow \: \: \boxed{ x = 13}`

hope helpful :)